Besides using hot springs, what is another cold survival strategy employed by troops living in non-onsen areas?

Answer

Huddling together in sheltered locations like caves or tree hollows

Troops that do not live near geothermal features rely on behavioral adaptations such as finding sheltered locations, like caves or tree hollows, where they can huddle together communally for warmth during extremely cold periods.

Besides using hot springs, what is another cold survival strategy employed by troops living in non-onsen areas?
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